/* Copyright 2017 Google Inc. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/

import {NDArrayMathGPU} from '../deeplearnjs';
import {ActivationFunction, ColorMode, CPPN} from '../nn-art/cppn';

function isSafari() {
  const ua = navigator.userAgent.toLowerCase();
  if (ua.indexOf('safari') !== -1) {
    if (ua.indexOf('chrome') > -1) {
      return false;
    } else {
      return true;
    }
  }
  return false;
}
function isMobile() {
  // tslint:disable-next-line:no-any
  const a = navigator.userAgent||navigator.vendor||(window as any).opera;
  // tslint:disable-next-line:max-line-length
  return /(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4));
}

const inferenceCanvas =
    document.querySelector('#inference') as HTMLCanvasElement;

let enableCPPN = false;

try {
  const math = new NDArrayMathGPU();
  enableCPPN = true;
  math.dispose();
} catch (e) {
  enableCPPN = false;
}

const isDeviceDisabled = isSafari() && isMobile();

enableCPPN = enableCPPN && !isDeviceDisabled;

if (enableCPPN) {
  startCPPN();
} else {
  document.getElementById('disabled-demo-overlay').style.display = '';
  inferenceCanvas.style.display = 'none';
}

function startCPPN() {
  const DEFAULT_Z_SCALE = 1;
  const NUM_NEURONS = 30;
  const DEFAULT_NUM_LAYERS = 2;
  const WEIGHTS_STDEV = 0.6;


  const cppn = new CPPN(inferenceCanvas);

  cppn.setActivationFunction('tanh');
  cppn.setColorMode('rgb');
  cppn.setNumLayers(DEFAULT_NUM_LAYERS);
  cppn.setZ1Scale(convertZScale(DEFAULT_Z_SCALE));
  cppn.setZ2Scale(convertZScale(DEFAULT_Z_SCALE));
  cppn.generateWeights(NUM_NEURONS, WEIGHTS_STDEV);
  cppn.start();

  const currentColorElement =
      document.querySelector('#colormode') as HTMLInputElement;

  document.querySelector('#color-selector')!.addEventListener(
      // tslint:disable-next-line:no-any
      'click', (event: any) => {
        const colorMode =
            (event.target as HTMLElement).getAttribute('data-val') as ColorMode;
        currentColorElement.value = colorMode;
        cppn.setColorMode(colorMode);
      });

  const currentActivationFnElement =
      document.querySelector('#activation-fn') as HTMLInputElement;
  document.querySelector('#activation-selector')!.addEventListener(
      // tslint:disable-next-line:no-any
      'click', (event: any) => {
        const activationFn =
            (event.target as HTMLElement).getAttribute('data-val') as
            ActivationFunction;
        currentActivationFnElement.value = activationFn;
        cppn.setActivationFunction(activationFn);
      });

  const layersSlider =
      document.querySelector('#layers-slider') as HTMLInputElement;
  const layersCountElement =
      document.querySelector('#layers-count') as HTMLDivElement;
  layersSlider!.addEventListener('input', (event) => {
    // tslint:disable-next-line:no-any
    const numLayers = parseInt((event as any).target.value, 10);
    layersCountElement.innerText = '' + numLayers;
    cppn.setNumLayers(numLayers);
  });
  layersCountElement.innerText = '' + DEFAULT_NUM_LAYERS;

  const z1Slider = document.querySelector('#z1-slider') as HTMLInputElement;
  z1Slider.addEventListener('input', (event) => {
    // tslint:disable-next-line:no-any
    const z1Scale = parseInt((event as any).target.value, 10);
    cppn.setZ1Scale(convertZScale(z1Scale));
  });

  const z2Slider = document.querySelector('#z2-slider') as HTMLInputElement;
  z2Slider.addEventListener('input', (event) => {
    // tslint:disable-next-line:no-any
    const z2Scale = parseInt((event as any).target.value, 10);
    cppn.setZ2Scale(convertZScale(z2Scale));
  });

  const randomizeButton =
      document.querySelector('#random') as HTMLButtonElement;
  randomizeButton.addEventListener('click', () => {
    cppn.generateWeights(NUM_NEURONS, WEIGHTS_STDEV);
    if (!playing) {
      cppn.start();
      requestAnimationFrame(() => {
        cppn.stopInferenceLoop();
      });
    }
  });

  let playing = true;
  const toggleButton = document.querySelector('#toggle') as HTMLButtonElement;
  toggleButton.addEventListener('click', () => {
    playing = !playing;
    if (playing) {
      toggleButton.innerHTML = 'STOP';
      cppn.start();
    } else {
      toggleButton.innerHTML = 'START';
      cppn.stopInferenceLoop();
    }
  });

  let canvasOnScreenLast = true;
  let scrollEventScheduled = false;
  const mainElement = document.querySelector('main') as HTMLElement;
  mainElement.addEventListener('scroll', () => {
    if (!scrollEventScheduled) {
      window.requestAnimationFrame(() => {
        const canvasOnScreen = isCanvasOnScreen();
        if (canvasOnScreen !== canvasOnScreenLast) {
          if (canvasOnScreen) {
            if (playing) {
              cppn.start();
            }
          } else {
            cppn.stopInferenceLoop();
          }
          canvasOnScreenLast = canvasOnScreen;
        }
        scrollEventScheduled = false;
      });
    }
    scrollEventScheduled = true;
  });

  function isCanvasOnScreen() {
    return mainElement.scrollTop < inferenceCanvas.offsetHeight;
  }

  function convertZScale(z: number): number {
    return (103 - z);
  }
}
